CVE-2021-25746
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 1.44% probability · 73th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- kubernetes/ingress-nginx
- Source
- jordan@liggitt.net
EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/kubernetes/ingress-nginx/issues/8503Issue Tracking, Mitigation, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQIssue Tracking, Mitigation, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220609-0006/Third Party Advisory
- https://github.com/kubernetes/ingress-nginx/issues/8503Issue Tracking, Mitigation, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQIssue Tracking, Mitigation, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220609-0006/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.